28 DISEASES OF THE NOSE AND ADJACENT SINUSES 



emitted. Abscess formation in the parapharyngeal lymph 

 glands (strangles) might be confused with filling of the 

 guttural pouches. In doubtful cases a surgical operation 

 (opening the abscess from in front of the wing of the atlas) 

 will assist in differentiation. When glanders is suspected 

 mallein should be used for diagnosis. 

 Tre atment . — Surgical . 



TYMPANY OF GUTTURAL POUCH. 



Definition. — A distention of the pouch with air or gas. 



Occurrence. — Colts born with it. In older horses may also 

 occur secondary to catarrh of pouches. 



Etiology. — A congenital deformity of the tube or its valve. 

 Secondary to catarrh of the pouches. 



Symptoms. — An elastic, pneumatic swelling in the parotid 

 region. May induce dyspnea, roaring, and dysphagia. 

 Nasal discharge may fail. 



Treatinent. — Surgical. Rarely successful. 



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